God...lol if I had a nickel for every time my mom told me to "go to your room if you need to do that" from the ages of 4-6, I could probably pay off my tuition.

You're fine. You're reacting on one of the most basic human instincts on the planet, that being "Good stimuli is good." There's nothing at all abnormal about it.

Just...lol perhaps don't use your parent's back massager without their permission.